peritreme of thoracic spiracle [FBbt_00013121]
The two-lipped external rim of an adult thoracic spiracle. Contraction of the spiracular occlusor muscle (FBbt:00013335) brings the two lips together, closing the spiracle.
peritreme of thoracic spiracle
ID: FBbt_00013121
Adult Anatomy
The two-lipped external rim of an adult thoracic spiracle. Contraction of the spiracular occlusor muscle (FBbt:00013335) brings the two lips together, closing the spiracle.
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- is part of: adult thoracic spiracle
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